SI5338M-A-GM

Overview

The SI5338M-A-GM is a programmable quad clock generator utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended outputs with frequencies up to 710 MHz, achieving 0 ppm precision. The device operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V, with typical current consumption of 45 mA. It features low phase jitter of 0.7 ps RMS typ, flexible input references including crystals and CMOS signals, and I2C/SMBus programming via ClockBuilder Pro software.

Feature Summary

• MultiSynth™ Technology: Generates four independent clocks with 0 ppm precision using patented synthesis architecture.
• Flexible Output Drivers: Supports LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats with independent voltage levels (1.5V, 1.8V, 2.5V, 3.3V).
• Low Jitter Performance: Achieves typical RMS jitter of 0.7 ps; compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• Glitchless Frequency Adjustment: Independent frequency increment/decrement in 1 ppm steps and phase adjustment with <20 ps accuracy.

Applications

• PCIe Gen 1/2/3/4 systems requiring common clock or SRNS compliance.
• Ethernet switch/router and 1 GbE/10 GbE timing.
• Processor and FPGA clocking solutions.
• Broadcast video/audio timing distribution.
• Telecom line cards and MSAN/DSLAM/PON equipment.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet revision 1.6 to confirm package type and shipping configuration. Confirm that the I2C pull-up voltage requirements match the system design, particularly if operating below 2.5 V. Ensure ESD handling procedures are followed as the device has specified HBM and CDM tolerances.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single IC to replace discrete oscillators. Verify that the desired output signal formats (LVDS, LVPECL, etc.) and voltage levels are supported by the available driver configurations. Check input reference compatibility, ensuring the source frequency falls within the supported ranges for crystal, CMOS, or differential inputs.

Part Context

The SI5338 series belongs to Skyworks' MultiSynth family of high-performance clock generators. This specific model provides quad-output synthesis capabilities in a compact 4x4 mm QFN-24 package. It is designed to reduce board space and power consumption compared to using multiple individual oscillator components.

Replacement Considerations

Direct pin-to-pin replacements within the same family include SI5338A, SI5338B, SI5338C, SI5338F, SI5338M, and SI5338Q variants. Selection depends on specific maximum output frequency requirements (e.g., SI5338F limits to 200 MHz, SI5338B to 350 MHz) and specific feature sets defined in the respective datasheets.